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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Security Engineer Cryptography & Blockchain - **Company:** PEAKLNK TECHNOLOGIES, INC. - **Location:** Southlake, TX, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, C++ (Programming Language), Communications Protocols, Digital Assets, Distributed Systems, Cryptographic Protocols, Fuzz Testing, Key Management, Quorum, Blockchain, Software Engineering, Tokenization, Web3.js, Blockchain Security - **Published:** June 12, 2026 - **Apply:** https://www.dice.com/job-detail/be74df01-5172-40ae-aeb6-291a7cb92bc3 ## About the Role * 7+ years of experience in software engineering, with a strong focus on security and cryptographic systems. * Hands-on expertise in secure wallet technologies and key management solutions (e.g., MPC, HSMs, or equivalent). * Strong understanding of cryptographic primitives, secure protocol design, and distributed system architectures. * Experience developing systems where security failures carry significant business or operational risk. * Proven ability to collaborate effectively across engineering, security, and risk functions. Preferred Qualifications * Experience with digital assets, crypto custody platforms, or blockchain infrastructure. * Exposure to advanced domains such as ZKPs, decentralized identity (DID), DeFi protocols, or CBDC-related systems. * Experience designing or implementing policy-driven transaction controls in high-risk environments. * Strong security mindset, with the ability to analyze and reason through complex threat models. * Familiarity with AI-assisted tools to enhance secure software development practices. ## Description Wallet Architecture & Key Management * Design and implement secure digital wallet solutions across MPC, HSM-based, and hot/warm/cold storage models. * Establish robust key lifecycle management including generation, storage, rotation, and recovery. * Implement distributed key generation and signing mechanisms to eliminate single points of failure. * Define and support custodial and non-custodial control frameworks aligned to security requirements. * Collaborate with technical stakeholders to validate cryptographic design and architecture decisions. Cryptography & Blockchain Security Engineering * Develop and integrate security-critical components using modern cryptographic protocols. * Apply secure design principles across blockchain and decentralized application environments. * Work on cross-chain interoperability and blockchain security patterns. * Evaluate and implement emerging technologies such as Zero Knowledge Proofs (ZKPs), Decentralized Identity (DID), and CBDC-related frameworks. * Ensure all implementations are secure, auditable, and production-ready. * Leverage Web3 security tools (Slither, Mythril, fuzz testing frameworks) and code in C, C++, Rust, or Go. Transaction Controls & Policy Management * Design and implement programmable transaction control frameworks, including: * Multi-party approval workflows * Quorum-based authorization models * Transaction limits and velocity controls * Role-based access and segregation of duties Translate risk and compliance requirements into deterministic and testable policies. Ensure policies are enforceable, observable, and version-controlled. Security, Risk & Cross-Functional Collaboration * Partner with engineering, cybersecurity, and risk/compliance teams to ensure strong security posture. * Proactively identify vulnerabilities, misconfigurations, and operational risks. * Contribute to threat modeling, security reviews, and architectural assessments. * Support incident analysis and remediation for blockchain or custody-related issues. * Engage with external security auditors for validation and assurance activities. Blockchain Platforms, Tokenization & Smart Contracts * Evaluate blockchain platforms and protocols for scalability, security, and suitability. * Design and review tokenization frameworks for assets such as securities and stablecoins. * Work with token standards including ERC-20, ERC-721, ERC-1155, and related models. * Assess token lifecycle management, settlement mechanisms, and on-chain governance structures. * Design and audit cross-chain interoperability solutions (e.g., lock-mint, burn-mint, atomic swaps). AI-Enabled Engineering & Security Practices * Utilize GenAI and AI-assisted tools to enhance: * Threat modeling * Cryptographic reviews * Documentation and validation Apply AI techniques to improve engineering efficiency while maintaining security and accuracy. ## Related Videos - [Future-Proofing FinTech With Blockchain Technology](https://www.wearedevelopers.com/videos/808-future-proofing-fintech-with-blockchain-technology) - [Pragmatic Blockchain Design Patterns: Integrating Blockchain into Business Processes](https://www.wearedevelopers.com/videos/1579-pragmatic-blockchain-design-patterns-integrating-blockchain-into-business-processes) - [Fireside Chat - In conversation with Werner Vogels, CTO of Amazon.com](https://www.wearedevelopers.com/videos/100265-fireside-chat-in-conversation-with-werner-vogels-cto-of-amazon-com) - [Smart Contract fundamentals - My first DApp](https://www.wearedevelopers.com/videos/52-smart-contract-fundamentals-my-first-dapp) - [This Machine Ends Data Breaches](https://www.wearedevelopers.com/videos/574-this-machine-ends-data-breaches) - [A Deep Dive on How To Leverage the NVIDIA GB200 for Ultra-Fast Training and Inference on Kubernetes](https://www.wearedevelopers.com/videos/1625-a-deep-dive-on-how-to-leverage-the-nvidia-gb200-for-ultra-fast-training-and-inference-on-kubernetes) ## Related Articles - [7 tips on how to become a blockchain developer](https://www.wearedevelopers.com/magazine/53-7-tips-on-how-to-become-a-blockchain-developer) - [Why Blockchain? A Developer’s Perspective](https://www.wearedevelopers.com/magazine/616-why-blockchain-a-developer-s-perspective) - [From Hype to Code: Real Blockchain Use Cases for Developers](https://www.wearedevelopers.com/magazine/620-from-hype-to-code-real-blockchain-use-cases-for-developers) - [The Best X (Twitter) Accounts for Developers](https://www.wearedevelopers.com/magazine/294-the-best-x-twitter-accounts-for-developers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [Dev Digest 138 - Are you secure about this?](https://www.wearedevelopers.com/magazine/486-dev-digest-138-are-you-secure-about-this)